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What is the difference between a potentiostat and a galvanostat?

2025-09-10

Potentiostat controls the potential (voltage) between the working electrode (WE) and the reference electrode (RE).

it measures the resulting current flowing between the working electrode (WE) and the counter electrode (CE).

Example techniques under potentiostat: Cyclic voltammetry(CV), linear sweep voltammetry(LSV), potentiostatic, potentiodynamic(corrosion test)

Galvanostat controls the current passing through the working electrode. Under galvanostat mode, it measures the resulting potential between WE and RE.

Example techniques under galvanostat: Galvanostatic charge/discharge(GCD) , galvanostatic, long-term stability tests

Usually potentiostat galvanostat are both integrated in an electrochemical workstation.

Wuhan Corrtest Instruments Corp., Ltd.

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What is the difference between a potentiostat and a galvanostat?

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